Problem
Assume you're studying an organism with 5 body segments, 1-5, with 1 being the anterior segment. Their development is regulated by genes Hox1-Hox5.
1) What is going to happen to segment 2 if you delete the Hox2 gene?
2) What will happen if you ectopically express Hox5 in segment 1?
3) You identify a mutant in which segment 1 is double the usual size, and segments 2-5 are slightly smaller. What mutation(s) in drosophila is this potentially analogous to?